by Ann Oldenburg, USA TODAY

by Ann Oldenburg, USA TODAY

He popped by The Arsenio Hall Show to surprise the host and tell him he's been picked up for a second season.

"I am here for a reason," Leno told the crowd, adding that he and Hall go back "35 years."

Then Leno opened a letter and announced the show has been picked up for a second season. Leno joked that Hall was "annoyed that I knew before he did!"

Hall asked him to come back and "one day do some comedy" on the show and Leno joked, "Actually, I'm going to be hosting the second season. They didn't tell you that?"

And then he planted a big kiss on Hall's cheek.

In a release about the news, Joe DiSalvo, CBS Television Distribution president of sales, noted that "the median age of an Arsenio viewer is 50.1, which is the youngest among late-night talk shows on broadcast TV season to date.*